/Engine/Source/Editor/UnrealEd/Public/Kismet2/KismetEditorUtilities.h
Checks to see if a blueprint can implement the specified class as an interface
static bool CanBlueprintImplementInterface ( [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) const * Blueprint, [UClass](API\Runtime\CoreUObject\UObject\UClass) const * Class )